<template>

  <el-menu default-active="1-4-1" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose" :collapse="isCollapse" background-color="rgb(40 40 50)"
           text-color="#fff"
           active-text-color="#rgb(123 204 255)"><h3>{{isCollapse ? '后台': 'Cool商城后台管理'}}</h3>

    <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :key="item.name" :index="`${item.name}`">
      <i v-bind:class="`el-icon-${item.icon}`"></i>
      <span slot="title">{{item.label}}</span>
    </el-menu-item>



    <el-submenu v-for="item in hasChildren" :key="item.label" index="item.label">
      <template slot="title">
        <i v-bind:class="`el-icon-${item.icon}`"></i>
        <span slot="title">{{item.label}}</span>
      </template>
      <el-menu-item-group v-for="subItem in item.children" :key="subItem.parentNode">
        <el-menu-item @click="clickMenu(subItem)"  index="subItem.parentNode">{{subItem.label}}</el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>
<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu{
  height: 120vh;
  border-right: 0;
  h3{
    text-align: center;
    line-height: 48px;
    color: #fff;
    font-size: 16px;
  }
}
</style>

<script>
export default {
  data() {
    return {
      menuData: [
        {
          path: "/",
          name: "home",
          label: "首页",
          icon: "s-home",
          url: "Home/Home",
        },
        {
          path: "/mall",
          name: "mall",
          label: "商品管理",
          icon: "video-play",
          url: "MallManage/MallManage",
        },
        {
          path: "/user",
          name: "user",
          label: "用户管理",
          icon: "user",
          url: "UserManage/UserManage",
        },
        {
          label: "其他",
          icon: "location",
          children: [
            {
              path: "/page1",
              name: "page1",
              label: "页面1",
              icon: "setting",
              url: "Other/PageOne",
            },
            {
              path: "/page2",
              name: "page2",
              label: "页面2",
              icon: "setting",
              url: "Other/PageTwo",
            },
          ],
        },
      ]
    };
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    clickMenu(item){
        console.log(item)
      if (this.$route.path!=item.path&&!(this.$route.path=='/home'&&(item.path==='/'))) {
        this.$router.push(item.path)
      }
    }
  },
  computed:{
    noChildren(){
      return this.menuData.filter(item=>item.children==null)
    },
    hasChildren(){
      return this.menuData.filter(item=>item.children!=null)
    },
    isCollapse(){
      console.log(this.$store.state.tab.isCollapse)
      return this.$store.state.tab.isCollapse
    }
  }
}
</script>